private static extern DVBError _GetChannel(IntPtr classPointer, out Channel_C rChannel);
private static extern DVBError _SetChannel(IntPtr classPointer, Channel_C rChannel, bool bPowerOnly);
private static extern DVBError _GetChannel( IntPtr classPointer, out Channel_C rChannel );
/// <summary>
/// Wählt eine Quellgruppe an.
/// </summary>
/// <param name="group">Die Daten zur Quellgruppe.</param>
/// <returns>Gesetzt, wenn es sich um eine DVB-C Quellgruppe handelt.</returns>
private Channel_C?Tune(CableGroup group)
{
// Not us
if (group == null)
{
return(null);
}
// Validate
if (FrontendType != FrontendType.Cable)
{
throw new DVBException("Expected " + FrontendType.ToString() + " Channel");
}
// Helper
var data =
new Channel_C
{
Frequency = group.Frequency,
SymbolRate = group.SymbolRate,
};
// Spectrum inversion
switch (group.SpectrumInversion)
{
case SpectrumInversions.On: data.Inversion = SpectrumInversion.On; break;
case SpectrumInversions.Off: data.Inversion = SpectrumInversion.Off; break;
case SpectrumInversions.Auto: data.Inversion = SpectrumInversion.Auto; break;
default: data.Inversion = SpectrumInversion.Auto; break;
}
// Modulation
switch (group.Modulation)
{
case CableModulations.QAM16: data.Qam = Qam.Qam16; break;
case CableModulations.QAM32: data.Qam = Qam.Qam32; break;
case CableModulations.QAM64: data.Qam = Qam.Qam64; break;
case CableModulations.QAM128: data.Qam = Qam.Qam128; break;
case CableModulations.QAM256: data.Qam = Qam.Qam256; break;
default: data.Qam = Qam.Qam64; break;
}
// Check supported modes
switch (group.Bandwidth)
{
case Bandwidths.Six: data.Bandwidth = BandwidthType.Six; break;
case Bandwidths.Seven: data.Bandwidth = BandwidthType.Seven; break;
case Bandwidths.Eight: data.Bandwidth = BandwidthType.Eight; break;
case Bandwidths.NotDefined: data.Bandwidth = BandwidthType.None; break;
default: data.Bandwidth = BandwidthType.Auto; break;
}
// Process
return(data.SetChannel(this));
}
private static extern DVBError _SetChannel( IntPtr classPointer, Channel_C rChannel, bool bPowerOnly );